If closed, mail would have to move through the Burlington, Manchester, N.H., and Albany facilities. The first-class delivery standard would also extend to three days.

The White River Junction sorting facility employs 250 workers. It, along with the Plattsburgh plant, have been on the closure list since February.

“We’re currently on the floor working on comprehensive postal reform, which would strengthen rural postal offices and make sure fewer of them are closed, and to protect as many mail processing plants as we possibly can,” Sanders said right after voting on some of the bill’s amendments.

“If this legislation is passed, and I am cautiously optimistic that it will be passed in the Senate [Wednesday], we are going to prevent the closing of about 125 processing plants,” the senator said.

Postal reform legislation is currently on the floor of the Senate. Sanders said he expects it to pass tomorrow. It will then have to move on to the U.S. House for approval.

“We virtually have all Democratic support here in the Senate, and we have about 10-20 Republicans supporting various amendments,” Sanders said. “I’m cautiously optimistic that we will pass this [Wednesday] by a wide, bi-partisan vote. At the end of the day, I think you have many Republicans who agree with us that maintaining a strong Postal Service is incredibly important for rural America and the overall economy.”